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heart assist device

A kind of equipment and heart technology, applied in the direction of mechanical equipment, circulatory assist devices, prostheses, etc., can solve problems such as wear, inappropriateness, and changes in the working characteristics of ventricular assist devices

Inactive Publication Date: 2016-01-20
CALON CARDIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional bearings are not suitable as they eventually wear out and alter the operating characteristics of the ventricular assist device

Method used

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Examples

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Embodiment Construction

[0044] Figure 1 to Figure 6 , wherein like parts are marked with like reference numerals, shows a first embodiment of a ventricular assist device according to the present invention. The ventricular assist device VAD comprises a pump chamber 101 with a blood inlet 102 and a blood outlet 103 . A main blood flow channel 104 is defined between the inlet 102 and the outlet 103 .

[0045] When implanted (see figure 2 ), the pump chamber 101 is located outside the heart, on the apex 105 of the ventricle, its outlet 103 is connected with an outflow cannula 106 which in turn is grafted to the descending aorta 107 . It is also possible to graft the outflow cannula 106 to the ascending aorta 108 (not shown in the figure). The pump chamber 101 includes an impeller 109 which is preferably radial or mixed flow and a volute 110 which assists in the conversion of kinetic energy thereby increasing efficiency.

[0046] The positioning of the pump chamber 101 outside the heart allows it to b...

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PUM

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Abstract

The device is a ventricular assist device comprising: a pump with a housing having radial impellers therein and a rotor driving the impellers, both of which are hydrodynamically suspended in use in the housing, the pump also comprising a stator for driving the rotor an inlet cannula part arranged to extend from the inside of the ventricle so as to span the wall of the ventricle, the stator within the inlet cannula part being located inside the ventricle; and an outlet for blood driven by the impeller so that the pump is a radial pump. Both the outlet and the impeller are located outside the heart.

Description

technical field [0001] The present invention relates to implantable cardiac assist devices, such as ventricular assist devices. Background technique [0002] Heart failure is a major global health problem, killing thousands of people every year. Until recently, the only way to treat advanced heart failure was a heart transplant or implantation of an artificial heart. Unfortunately, only a small fraction of the needs are met with donor hearts, and total artificial hearts have not yet gained widespread acceptance due to the technical difficulties associated with them. [0003] Ventricular assist devices (VADs) have gradually gained acceptance over the past three decades, primarily as bridges to implanted devices. Ventricular assist devices are implanted chronically and work with a diseased heart to increase the output of the heart and keep the patient alive and / or give a better quality of life while awaiting transplantation. The use of these devices has produced unexpected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10F04D29/22
CPCA61M60/824A61M60/422A61M60/148A61M60/863A61M60/178A61M60/806A61M60/226A61M60/814A61M60/221
Inventor 格雷厄姆·福斯特
Owner CALON CARDIO TECH
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